[unix-history] / usr / src / games / quiz.c

#include <stdio.h>
#include <signal.h>

#define NF 10
#define NL 300
#define NC 200
#define SL 100
#define NA 10

int tflag;
int xx[NL];
char score[NL];
int rights;
int wrongs;
int guesses;
FILE *input;
int nl = 0;
int na = NA;
int inc;
int ptr  = 0;
int nc = 0;
char line[150];
char response[100];
char *tmp[NF];
int select[NF];
char	*malloc();

readline()
{
	char *t;
	register c;
loop:
	for (t=line; c=getc(input), *t=c, c!=EOF; t++) {
		nc++;
		if(*t==' '&&(t==line||t[-1]==' '))
			t--;
		if(*t=='\n') {
			if(t[-1]=='\\')		/*inexact test*/
				continue;
			while(t>line&&t[-1]==' ')
				*--t = '\n';
			*++t = 0;
			return(1);
		}
		if(t-line>=NC) {
			printf("Too hard for me\n");
			do {
				*line = getc(input);
				if(*line==0377)
					return(0);
			} while(*line!='\n');
			goto loop;
		}
	}
	return(0);
}

char *eu;
char *ev;
cmp(u,v)
char *u, *v;
{
	int x;
	eu = u;
	ev = v;
	x = disj(1);
	if(x!=1)
		return(x);
	return(eat(1,0));
}

disj(s)
{
	int t, x;
	char *u;
	u = eu;
	t = 0;
	for(;;) {
		x = string(s);
		if(x>1)
			return(x);
		switch(*ev) {
		case 0:
		case ']':
		case '}':
			return(t|x&s);
		case '|':
			ev++;
			t |= s;
			s = 0;
			continue;
		}
		if(s) eu = u;
		if(string(0)>1)
			return(2);
		switch(*ev) {
		case 0:
		case ']':
			return(0);
		case '}':
			return(1);
		case '|':
			ev++;
			continue;
		default:
			return(2);
		}
	}
}

string(s)
{
	int x;
	for(;;) {
		switch(*ev) {
		case 0:
		case '|':
		case ']':
		case '}':
			return(1);
		case '\\':
			ev++;
			if(*ev==0)
				return(2);
			if(*ev=='\n') {
				ev++;
				continue;
			}
		default:
			if(eat(s,*ev)==1)
				continue;
			return(0);
		case '[':
			ev++;
			x = disj(s);
			if(*ev!=']' || x>1)
				return(2);
			ev++;
			if(s==0)
				continue;
			if(x==0)
				return(0);
			continue;
		case '{':
			ev++;
			x = disj(s);
			if(*ev!='}'||x>1)
				return(2);
			ev++;
			continue;
		}
	}
}

eat(s,c)
char c;
{
	if(*ev!=c)
		return(2);
	if(s==0) {
		ev++;
		return(1);
	}
	if(fold(*eu)!=fold(c))
		return(0);
	eu++;
	ev++;
	return(1);
}

fold(c)
char c;
{
	if(c<'A'||c>'Z')
		return(c);
	return(c|040);
}

publish(t)
char *t;
{
	ev = t;
	pub1(1);
}

pub1(s)
{
	for(;;ev++){
		switch(*ev) {
		case '|':
			s = 0;
			continue;
		case ']':
		case '}':
		case 0:
			return;
		case '[':
		case '{':
			ev++;
			pub1(s);
			continue;
		case '\\':
			if(*++ev=='\n')
				continue;
		default:
			if(s)
				putchar(*ev);
		}
	}
}

segment(u,w)
char *u, *w[];
{
	char *s;
	int i;
	char *t;
	s = u;
	for(i=0;i<NF;i++) {
		u = s;
		t = w[i];
		while(*s!=':'&&*s!='\n'&&s-u<SL) {
			if(*s=='\\')  {
				if(s[1] == '\n') {
					s += 2;
					continue;
				}
				*t++ = *s++;
			}
			*t++ = *s++;
		}

		while(*s!=':'&&*s!='\n')
			s++;
		*t = 0;
		if(*s++=='\n') {
			return(i+1);
		}
	}
	printf("Too many facts about one thing\n");
	return(0);
}

perm(u,m,v,n,p)
int p[];
char *u[], *v[];
{
	int i, j;
	int x;
	for(i=0;i<m;i++) {
		for(j=0;j<n;j++) {
			x = cmp(u[i],v[j]);
			if(x>1) badinfo();
			if(x==0)
				continue;
			p[i] = j;
			goto uloop;
		}
		return(0);
uloop:		;
	}
	return(1);
}

find(u,m)
char *u[];
{
	int n;
	while(readline()){
		n = segment(line,tmp);
		if(perm(u,m,tmp+1,n-1,select))
			return(1);
	}
	return(0);
}

readindex()
{
	xx[0] = nc = 0;
	while(readline()) {
		xx[++nl] = nc;
		if(nl>=NL) {
			printf("I've forgotten some of it;\n");
			printf("I remember %d items.\n", nl);
			break;
		}
	}
}

talloc()
{
	int i;
	for(i=0;i<NF;i++)
		tmp[i] = malloc(SL);
}

main(argc,argv)
char *argv[];
{
	register j;
	int i;
	int x;
	int z;
	char *info;
	long tm;
	extern done();
	int count;
	info = "/usr/games/quiz.k/index";
	time(&tm);
	inc = (int)tm&077774|01;
loop:
	if(argc>1&&*argv[1]=='-') {
		switch(argv[1][1]) {
		case 'i':
			if(argc>2) 
				info = argv[2];
			argc -= 2;
			argv += 2;
			goto loop;
		case 't':
			tflag = 1;
			argc--;
			argv++;
			goto loop;
		}
	}
	input = fopen(info,"r");
	if(input==NULL) {
		printf("No info\n");
		exit(0);
	}
	talloc();
	if(argc<=2)
		instruct(info);
	signal(SIGINT, done);
	argv[argc] = 0;
	if(find(&argv[1],argc-1)==0)
		dunno();
	fclose(input);
	input = fopen(tmp[0],"r");
	if(input==NULL)
		dunno();
	readindex();
	if(!tflag || na>nl)
		na = nl;
	stdout->_flag |= _IONBF;
	for(;;) {
		i = next();
		fseek(input,xx[i]+0L,0);
		z = xx[i+1]-xx[i];
		for(j=0;j<z;j++)
			line[j] = getc(input);
		segment(line,tmp);
		if(*tmp[select[0]] == '\0' || *tmp[select[1]] == '\0') {
			score[i] = 1;
			continue;
		}
		publish(tmp[select[0]]);
		printf("\n");
		for(count=0;;count++) {
			if(query(response)==0) {
				publish(tmp[select[1]]);
				printf("\n");
				if(count==0) wrongs++;
				score[i] = tflag?-1:1;
				break;
			}
			x = cmp(response,tmp[select[1]]);
			if(x>1) badinfo();
			if(x==1) {
				printf("Right!\n");
				if(count==0) rights++;
				if(++score[i]>=1 && na<nl)
					na++;
				break;
			}
			printf("What?\n");
			if(count==0) wrongs++;
			score[i] = tflag?-1:1;
		}
		guesses += count;
	}
}

query(r)
char *r;
{
	char *t;
	for(t=r;;t++) {
		if(read(0,t,1)==0)
			done();
		if(*t==' '&&(t==r||t[-1]==' '))
			t--;
		if(*t=='\n') {
			while(t>r&&t[-1]==' ')
				*--t = '\n';
			break;
		}
	}
	*t = 0;
	return(t-r);
}

next()
{
	int flag;
	inc = inc*3125&077777;
	ptr = (inc>>2)%na;
	flag = 0;
	while(score[ptr]>0)
		if(++ptr>=na) {
			ptr = 0;
			if(flag) done();
			flag = 1;
		}
	return(ptr);
}

done()
{
	printf("\nRights %d, wrongs %d, ", rights, wrongs);
	if(guesses)
		printf("extra guesses %d, ", guesses);
	printf("score %d%%\n",100*rights/(rights+wrongs));
	exit(0);
}
instruct(info)
char *info;
{
	int i, n;
	printf("Subjects:\n\n");
	while(readline()) {
		printf("-");
		n = segment(line,tmp);
		for(i=1;i<n;i++) {
			printf(" ");
			publish(tmp[i]);
		}
		printf("\n");
	}
	printf("\n");
	input = fopen(info,"r");
	if(input==NULL)
		abort();
	readline();
	segment(line,tmp);
	printf("For example,\n");
	printf("    quiz ");
	publish(tmp[1]);
	printf(" ");
	publish(tmp[2]);
	printf("\nasks you a ");
	publish(tmp[1]);
	printf(" and you answer the ");
	publish(tmp[2]);
	printf("\n    quiz ");
	publish(tmp[2]);
	printf(" ");
	publish(tmp[1]);
	printf("\nworks the other way around\n");
	printf("\nType empty line to get correct answer.\n");
	exit(0);
}

badinfo(){
	printf("Bad info %s\n",line);
}

dunno()
{
	printf("I don't know about that\n");
	exit(0);
}
Commit	Line	Data
b2dd39a1 KT	1	#include <stdio.h>
	2	#include <signal.h>
	3
	4	#define NF 10
	5	#define NL 300
	6	#define NC 200
	7	#define SL 100
	8	#define NA 10
	9
	10	int tflag;
	11	int xx[NL];
	12	char score[NL];
	13	int rights;
	14	int wrongs;
	15	int guesses;
	16	FILE *input;
	17	int nl = 0;
	18	int na = NA;
	19	int inc;
	20	int ptr = 0;
	21	int nc = 0;
	22	char line[150];
	23	char response[100];
	24	char *tmp[NF];
	25	int select[NF];
	26	char *malloc();
	27
	28	readline()
	29	{
	30	char *t;
	31	register c;
	32	loop:
	33	for (t=line; c=getc(input), *t=c, c!=EOF; t++) {
	34	nc++;
	35	if(*t==' '&&(t==line\|\|t[-1]==' '))
	36	t--;
	37	if(*t=='\n') {
	38	if(t[-1]=='\\') /inexact test/
	39	continue;
	40	while(t>line&&t[-1]==' ')
	41	*--t = '\n';
	42	*++t = 0;
	43	return(1);
	44	}
	45	if(t-line>=NC) {
	46	printf("Too hard for me\n");
	47	do {
	48	*line = getc(input);
	49	if(*line==0377)
	50	return(0);
	51	} while(*line!='\n');
	52	goto loop;
	53	}
	54	}
	55	return(0);
	56	}
	57
	58	char *eu;
	59	char *ev;
	60	cmp(u,v)
	61	char u, v;
	62	{
	63	int x;
	64	eu = u;
65	ev = v;
66	x = disj(1);
67	if(x!=1)
68	return(x);
69	return(eat(1,0));
70	}
71
72	disj(s)
73	{
74	int t, x;
75	char *u;
76	u = eu;
77	t = 0;
78	for(;;) {
79	x = string(s);
80	if(x>1)
81	return(x);
82	switch(*ev) {
83	case 0:
84	case ']':
85	case '}':
86	return(t\|x&s);
87	case '\|':
88	ev++;
89	t \|= s;
90	s = 0;
91	continue;
92	}
93	if(s) eu = u;
94	if(string(0)>1)
95	return(2);
96	switch(*ev) {
97	case 0:
98	case ']':
99	return(0);
100	case '}':
101	return(1);
102	case '\|':
103	ev++;
104	continue;
105	default:
106	return(2);
107	}
108	}
109	}
110
111	string(s)
112	{
113	int x;
114	for(;;) {
115	switch(*ev) {
116	case 0:
117	case '\|':
118	case ']':
119	case '}':
120	return(1);
121	case '\\':
122	ev++;
123	if(*ev==0)
124	return(2);
125	if(*ev=='\n') {
126	ev++;
127	continue;
128	}
129	default:
130	if(eat(s,*ev)==1)
131	continue;
132	return(0);
133	case '[':
134	ev++;
135	x = disj(s);
136	if(*ev!=']' \|\| x>1)
137	return(2);
138	ev++;
139	if(s==0)
140	continue;
141	if(x==0)
142	return(0);
143	continue;
144	case '{':
145	ev++;
146	x = disj(s);
147	if(*ev!='}'\|\|x>1)
148	return(2);
149	ev++;
150	continue;
151	}
152	}
153	}
154
155	eat(s,c)
156	char c;
157	{
158	if(*ev!=c)
159	return(2);
160	if(s==0) {
161	ev++;
162	return(1);
163	}
164	if(fold(*eu)!=fold(c))
165	return(0);
166	eu++;
167	ev++;
168	return(1);
169	}
170
171	fold(c)
172	char c;
173	{
174	if(c<'A'\|\|c>'Z')
175	return(c);
176	return(c\|040);
177	}
178
179	publish(t)
180	char *t;
181	{
182	ev = t;
183	pub1(1);
184	}
185
186	pub1(s)
187	{
188	for(;;ev++){
189	switch(*ev) {
190	case '\|':
191	s = 0;
192	continue;
193	case ']':
194	case '}':
195	case 0:
196	return;
197	case '[':
198	case '{':
199	ev++;
200	pub1(s);
201	continue;
202	case '\\':
203	if(*++ev=='\n')
204	continue;
205	default:
206	if(s)
207	putchar(*ev);
208	}
209	}
210	}
211
212	segment(u,w)
213	char u, w[];
214	{
215	char *s;
216	int i;
217	char *t;
218	s = u;
219	for(i=0;i<NF;i++) {
220	u = s;
221	t = w[i];
222	while(s!=':'&&s!='\n'&&s-u<SL) {
223	if(*s=='\\') {
224	if(s[1] == '\n') {
225	s += 2;
226	continue;
227	}
228	t++ = s++;
229	}
230	t++ = s++;
231	}
232
233	while(s!=':'&&s!='\n')
234	s++;
235	*t = 0;
236	if(*s++=='\n') {
237	return(i+1);
238	}
239	}
240	printf("Too many facts about one thing\n");
241	return(0);
242	}
243
244	perm(u,m,v,n,p)
245	int p[];
246	char u[], v[];
247	{
248	int i, j;
249	int x;
250	for(i=0;i<m;i++) {
251	for(j=0;j<n;j++) {
252	x = cmp(u[i],v[j]);
253	if(x>1) badinfo();
254	if(x==0)
255	continue;
256	p[i] = j;
257	goto uloop;
258	}
259	return(0);
260	uloop: ;
261	}
262	return(1);
263	}
264
265	find(u,m)
266	char *u[];
267	{
268	int n;
269	while(readline()){
270	n = segment(line,tmp);
271	if(perm(u,m,tmp+1,n-1,select))
272	return(1);
273	}
274	return(0);
275	}
276
277	readindex()
278	{
279	xx[0] = nc = 0;
280	while(readline()) {
281	xx[++nl] = nc;
282	if(nl>=NL) {
283	printf("I've forgotten some of it;\n");
284	printf("I remember %d items.\n", nl);
285	break;
286	}
287	}
288	}
289
290	talloc()
291	{
292	int i;
293	for(i=0;i<NF;i++)
294	tmp[i] = malloc(SL);
295	}
296
297	main(argc,argv)
298	char *argv[];
299	{
300	register j;
301	int i;
302	int x;
303	int z;
304	char *info;
305	long tm;
306	extern done();
307	int count;
308	info = "/usr/games/quiz.k/index";
309	time(&tm);
310	inc = (int)tm&077774\|01;
311	loop:
312	if(argc>1&&*argv[1]=='-') {
313	switch(argv[1][1]) {
314	case 'i':
315	if(argc>2)
316	info = argv[2];
317	argc -= 2;
318	argv += 2;
319	goto loop;
320	case 't':
321	tflag = 1;
322	argc--;
323	argv++;
324	goto loop;
325	}
326	}
327	input = fopen(info,"r");
328	if(input==NULL) {
329	printf("No info\n");
330	exit(0);
331	}
332	talloc();
333	if(argc<=2)
334	instruct(info);
335	signal(SIGINT, done);
336	argv[argc] = 0;
337	if(find(&argv[1],argc-1)==0)
338	dunno();
339	fclose(input);
340	input = fopen(tmp[0],"r");
341	if(input==NULL)
342	dunno();
343	readindex();
344	if(!tflag \|\| na>nl)
345	na = nl;
346	stdout->_flag \|= _IONBF;
347	for(;;) {
348	i = next();
349	fseek(input,xx[i]+0L,0);
350	z = xx[i+1]-xx[i];
351	for(j=0;j<z;j++)
352	line[j] = getc(input);
353	segment(line,tmp);
354	if(tmp[select[0]] == '\0' \|\| tmp[select[1]] == '\0') {
355	score[i] = 1;
356	continue;
357	}
358	publish(tmp[select[0]]);
359	printf("\n");
360	for(count=0;;count++) {
361	if(query(response)==0) {
362	publish(tmp[select[1]]);
363	printf("\n");
364	if(count==0) wrongs++;
365	score[i] = tflag?-1:1;
366	break;
367	}
368	x = cmp(response,tmp[select[1]]);
369	if(x>1) badinfo();
370	if(x==1) {
371	printf("Right!\n");
372	if(count==0) rights++;
373	if(++score[i]>=1 && na<nl)
374	na++;
375	break;
376	}
377	printf("What?\n");
378	if(count==0) wrongs++;
379	score[i] = tflag?-1:1;
380	}
381	guesses += count;
382	}
383	}
384
385	query(r)
386	char *r;
387	{
388	char *t;
389	for(t=r;;t++) {
390	if(read(0,t,1)==0)
391	done();
392	if(*t==' '&&(t==r\|\|t[-1]==' '))
393	t--;
394	if(*t=='\n') {
395	while(t>r&&t[-1]==' ')
396	*--t = '\n';
397	break;
398	}
399	}
400	*t = 0;
401	return(t-r);
402	}
403
404	next()
405	{
406	int flag;
407	inc = inc*3125&077777;
408	ptr = (inc>>2)%na;
409	flag = 0;
410	while(score[ptr]>0)
411	if(++ptr>=na) {
412	ptr = 0;
413	if(flag) done();
414	flag = 1;
415	}
416	return(ptr);
417	}
418
419	done()
420	{
421	printf("\nRights %d, wrongs %d, ", rights, wrongs);
422	if(guesses)
423	printf("extra guesses %d, ", guesses);
424	printf("score %d%%\n",100*rights/(rights+wrongs));
425	exit(0);
426	}
427	instruct(info)
428	char *info;
429	{
430	int i, n;
431	printf("Subjects:\n\n");
432	while(readline()) {
433	printf("-");
434	n = segment(line,tmp);
435	for(i=1;i<n;i++) {
436	printf(" ");
437	publish(tmp[i]);
438	}
439	printf("\n");
440	}
441	printf("\n");
442	input = fopen(info,"r");
443	if(input==NULL)
444	abort();
445	readline();
446	segment(line,tmp);
447	printf("For example,\n");
448	printf(" quiz ");
449	publish(tmp[1]);
450	printf(" ");
451	publish(tmp[2]);
452	printf("\nasks you a ");
453	publish(tmp[1]);
454	printf(" and you answer the ");
455	publish(tmp[2]);
456	printf("\n quiz ");
457	publish(tmp[2]);
458	printf(" ");
459	publish(tmp[1]);
460	printf("\nworks the other way around\n");
461	printf("\nType empty line to get correct answer.\n");
462	exit(0);
463	}
464
465	badinfo(){
466	printf("Bad info %s\n",line);
467	}
468
469	dunno()
470	{
471	printf("I don't know about that\n");
472	exit(0);
473	}